Hi @comobi,
Your Gateway means that you have your own SMS or Email Gateway for delivering OTP to the user’s email or phone. The plugin will handle OTP generation and verification but your existing gateway would be used to deliver the message to the user. There’s just a One Time Cost associated with this plan from our end.
As SMS/Email delivery depends on the external gateway provider that you are using the limitation, pricing for SMS/Email delivery would depend on your gateway provider.
You can read more about our plans here: https://faq.miniorange.com/knowledgebase/plans-related-issue/